
Fix BitLocker Authentication Failed with TPM Not Working
If BitLocker prompts for a recovery key or shows "Authentication failed" and TPM is not working, ...

If BitLocker prompts for a recovery key or shows "Authentication failed" and TPM is not working, ...

You try to run sfc /scannow in PowerShell and get an error like "Service unavailable...

You might see a "Search rate limit exceeded" or similar error when using Windows Search frequentl...

If you see a token expired error in the PowerShell terminal inside Visual Studio...

You click to open Windows Defender Security Center and see a 404 page, or the Settings app shows ...

You restart your PC and notice Windows Security (formerly Windows Defender) isn't running. The ic...